1399510218820 has 48 divisors (see below), whose sum is σ = 3392080247808. Its totient is φ = 475081257600.

The previous prime is 1399510218817. The next prime is 1399510218889. The reversal of 1399510218820 is 288120159931.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49473492 + ... + 49501771.

It is an arithmetic number, because the mean of its divisors is an integer number (70668338496).

Almost surely, 2^{1399510218820} is an apocalyptic number.

1399510218820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1399510218820 is an abundant number, since it is smaller than the sum of its proper divisors (1992570028988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1399510218820 is a wasteful number, since it uses less digits than its factorization.

1399510218820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98975380 (or 98975378 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 49.

The spelling of 1399510218820 in words is "one trillion, three hundred ninety-nine billion, five hundred ten million, two hundred eighteen thousand, eight hundred twenty".